Patents Examined by V. N. Trans
  • Patent number: 5168449
    Abstract: A method of calculating torque used in the initial percent on time of the solenoid-actuated valve for the release element such that when the speed change is complete, the actual acceleration approximately equals a desired turbine acceleration.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 1, 1992
    Assignee: Chrysler Corporation
    Inventor: Howard L. Benford
  • Patent number: 5157618
    Abstract: Disclosed is a set of functional components (tiles), consisting in part of subgate elements, which, by their design, facilitate the creation of dense integrated circuits, without forfeiting the capability of modifying the functionality of individual tiles by late mask programming techniques. Overall densities approaching those obtained with hand-crafted, custom designs can be obtained in part because such components are designed to be tiled throughout a storage logic array, permitting the creation of orthogonal logic gates as well as individual gates (and more complex functions) the functionality of which is distributed horizontally, vertically and even in a zigzag fashion. Moreover, the transition time from prototype to high volume manufacturing is reduced significantly due to the ease with which even complex functions can be repaired and enhanced.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: October 20, 1992
    Assignee: Cirrus Logic, Inc.
    Inventors: H. Ravindra, Suhas S. Patil, Ernest S. Lin, Mahmud Assar, Dayakar Reddy
  • Patent number: 5153834
    Abstract: In order to determine the characteristics of combustion which takes place in the combustion chamber of an internal combustion engine, the pressure in the chamber is sampled at predetermined intervals over a predetermined sampling range, the values are mathematically processed in a manner to obtain the position of center of gravity for the instant combustion and the COG position is then compared with pre-recorded data to determine the actual nature of the combustion. Embodiments of the invention improve on the COG position derivation by screening the data with respect to the highest of the sampled values or modifying all of the data with respect to the lowest of the sampled values.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: October 6, 1992
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Toshimi Abo, Tatsuo Morita, Nobutaka Takahashi
  • Patent number: 5151867
    Abstract: A method for simplifying Boolean AND-OR logic in a circuit synthesis system. Rules are associated with model instances representing circuit components and contained in a data base. During testing of an antecedent portion of a rule, a benefit value representing a decrease in pins or an improvement in timing is calculated and compared to the value of a "benefit variable", which represents a minimum acceptable benefit that must be gained from application of a rule. If a sufficient benefit will result from application of the rule, the rule is applied. Some rules simplify the circuit and then recursively call themselves. Some rules indicate other model instances in the data base, search the set of rules for rules applicable to that model instance, and apply the rule discovered during the search.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: September 29, 1992
    Assignee: Digital Equipment Corporation
    Inventors: Donald F. Hooper, James L. Finnerty, David B. Fite, Snehamay Kundu
  • Patent number: 5150308
    Abstract: A logic method for automatically adding new parameters to a data base in a logic synthesis system. Initially, parameter definitions are input to the system and stored in a parameter definition table and used to create functions for accessing the parameter values associated with various components (model instances) in the data base. Both singular and plural access functions are generated for accessing single parameter values and lists of parameter values, respectively. A SETF function for modifying the parameter values is also generated from information in the parameter definition. Parameter values can be inherited from one model instance by another model instance. Each model instance in the data base has a dynamic parameter list associated therewith. Each dynamic parameter list contains entries of parameter name/value pairs. During circuit synthesis, the parameter values of various ones of these entries are modified using the SETF function, which was automatically generated previously.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: September 22, 1992
    Assignee: Digital Equipment Corporation
    Inventors: Donald F. Hooper, Edward G. Fortmiller, David F. Wall
  • Patent number: 5148369
    Abstract: An air-fuel ratio control apparatus for an internal combustion engine controls a fuel supplying means by a signal generated from an air-fuel sensor so that the air-fuel ratio of a gas mixture to be sucked into the internal combustion engine becoms a target air-fuel ratio. The air-fuel ratio control apparatus corrects the target air-fuel ratio by a parameter on the condition of the engine detected by the detecting means so that a fuel supplying device is controlled to obtain a corrected target air-fuel ratio.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: September 15, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masanobu Uchinami, Toshihisa Takahashi, Ryoji Nishiyama, Hiroyoshi Suzuki, Shinichi Nishida
  • Patent number: 5144563
    Abstract: Element placement optimizing method and apparatus for determining an optimum placement of constituent elements for an LSI or the like. A parallel processing type computer system including a plurality of CPUs is used. An initial element placement is established and a number of paired element candidates for position exchange are selected from the initial placement, the number being equal to that of CPUS. A cost improvement value resulting from the exchange is determined for each of the paired candidates by the associated CPU. The exchange of the elements is performed for the paired element candidates for which the cost improvement value is maximum of those determined by the CPUs. By repeating the exchange, an optimum element placement is determined.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: September 1, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Date, Terumine Hayashi
  • Patent number: 5138556
    Abstract: An antiskid control device including a wheel speed detecting member, an antiskid processor member for performing arithmetic operation on the basis of a wheel speed signal from the wheel speed detecting member and issuing to a hydraulic circuit, first and second commands of reducing and increasing a braking pressure upon detection of trends of wheels towards locking and towards recovery from locking, respectively, a solenoid driving member for driving a solenoid for a pressure control valve of the hydraulic circuit in accordance with the first and second commands and a decision member for deciding that the wheel speed detecting member is malfunctioning when a state that the arithmetic and locking state detecting member does not issue the first command to the hydraulic circuit during a first predetermined time period has not been detected at all during a second predetermined time period.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: August 11, 1992
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Masato Yoshino
  • Patent number: 5136495
    Abstract: A speed ratio control system of a continuously variable transmission for a vehicle is provided, wherein a speed ratio is feedback-controlled in association with a deviation between a target and a measured value, so that the speed ratio can be continuously varied and adjusted. A gain of feedback control or shift speed is utilized, which has been constant or accurately determined, and the gain of feedback control or shift speed is optimally set in accordance with the feedback control, so as to obtain a continuously variable transmission which has high response characteristics and stability.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: August 4, 1992
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Setsuo Tokoro, Tomoyuki Watanabe, Takashi Hayashi, Takashi Shigematsu
  • Patent number: 5126950
    Abstract: Synchronous array logic circuitry and a system for automatically laying out such circuitry for the fabrication of integrated circuits are described. The synchronous array logic circuitry includes as many cells as necessary to perform the desired functions with each cell including a transistor array for evaluating a Boolean function and supplying the result to a storage element through a multiplexer. The storage element latches the output signal and supplies it to other transistor arrays and/or other cells. The transistor array includes serially connected transistors for performing AND functions and parallel connected transistors for performing OR functions. The multiplexer operates under control of a test signal to configure the storage elements serially, thereby enabling complete testability of all cells.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: June 30, 1992
    Assignee: National Semiconductor Corporation
    Inventors: David B. Rees, Avi S. Bahra, David Cooke, Jaspal S. Gill, Michael J. Glennon, John A. Hesketh, Alison C. McVicar, Nigel K. Ross, Keith W. Turnbull, Robert G. Warren
  • Patent number: 5124916
    Abstract: An apparatus for controlling a vehicle automatic transmission having a plurality of operating positions, including a determining device for determining satisfaction degress of at least one basic fuzzy set theory rule corresponding to the respective operating positions of the transmission, based on a predetermined shift pattern, a first calculating device for calculating satisfaction degrees of fuzzy set control rules, corresponding to the respective operating positions of the transmission, depending upon a detected vehicle running condition, a second calculating device for calculating overall satisfaction degrees for selecting the respective operating positions, based on the calculated satisfaction degress of the basic fuzzy set theory rule or rules and the calculated satisfaction degrees of the fuzzy set control rules, and a selector for selecting one of the positions of the transmission, based on the calculated overall satisfaction degrees, so that the automatic transmission is shifted to the selected posit
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: June 23, 1992
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Setsuo Tokoro, Mitsuru Takada
  • Patent number: 5124931
    Abstract: In a method of inspecting the electric characteristics of wafers, detecting for second and subsequent alignment operations of probe cards is automatically executed. In an apparatus for inspecting the electric characteristics of wafer, different types of wafers can be continuously inspected using the same probe card on the basis of prestored alignment data of each type of wafers.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: June 23, 1992
    Assignee: Tokyo Electron Limited
    Inventors: Masaaki Iwamatsu, Ryuichi Takebuchi, Yoshihito Marumo, Wataru Karasawa
  • Patent number: 5121336
    Abstract: For air-bridges running orthogonally to the channel, a detailed routing of the interconnect lines is performed. A post expansion is then performed to spread existing lines by adding more tracks if required for support posts. The interconnect lines are then scanned to determine post placements. For air-bridges running parallel to the channel, empty post positions are determined and aligned to optimize the distance between positions. Detailed routing is then performed and the lines are scanned to determine post placement. Finally, cell rows and interconnects are compacted.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: June 9, 1992
    Assignee: The Boeing Company
    Inventor: Kou-Chuan Chang
  • Patent number: 5119314
    Abstract: A semiconductor integrated circuit device which can operate at high speed and involves a low power consumption and a high integration density, wherein a Bi-CMOS basic cell and a Bi-CMOS macro cell are employed to define a critical path and a CMOS basic cell and a CMOS macro cell are employed for a portion of the device other than the critical path.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: June 2, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Hotta, Masahiro Iwamura
  • Patent number: 5115397
    Abstract: A fuel injection control apparatus for an internal combustion engine in which the air taken into the intake manifold by a Karman vortex detector. However, the amount of fuel injected is based on a calculated intake volume. The calculated intake volume for a time interval is a weighted sum of the measured volume and the calculated intake volume of the previous period. This overaging amounts for surge storage in the intake manifold and other input paths.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: May 19, 1992
    Assignees: Mitsubishi Jidosha Kogyo K.K., Mitsubishi Denki K.K.
    Inventors: Akira Takahashi, Yoshiaki Kanno, Jiro Sumitani, Katsuya Nakamoto, Takeo Sasaki, Masahira Akasu
  • Patent number: 5113352
    Abstract: The interconnection costs of electronically linked objects is minimized by the successive partitioning of the initial logic design. The partitioning is based upon the electrical properties of the drivers and loads of the linked objects forming the design. Further, time critical connections are weighted so as to further minimize interconnection cost. A further method refines the result of the successive partitioning by calculating each linked object's contribution to the overall delay of the design. Both the design of device function and timing and the physical realization of the electronically linked objects are solved jointly to make use of the information available from the logical and physical designs.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: May 12, 1992
    Assignee: Digital Equipment Corporation
    Inventor: James L. Finnerty
  • Patent number: 5103413
    Abstract: A travel detecting apparatus is disclosed which generates a pulse signal in response to vehicle motion and detects the actual rate of vehicle travel in accordance with the pulse signal. The apparatus comprises a speed or RPM sensor coupled to an automotive transmission for generating a first pulse signal representative of the vehicle speed or RPM, a tire-size setting switch for setting tire information relating to the dimensions of the tires of the vehicle, and a CPU for frequency converting the first pulse signal in response to the tire information to generate a second pulse and for detecting the rate of vehicle travel in accordance with the second pulse signal.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: April 7, 1992
    Assignee: Yazaki Corporation
    Inventor: Hiroaki Ohata
  • Patent number: 5099429
    Abstract: An adaptive control system for categorized engine conditions is disclosed in which the engine conditions to be controlled are discriminated and classified in accordance with the driver's intent and the vehicle operating conditions. It is decided that a given engine control condition is continued or the transition is under way between different control conditions as a history judgement, and a vehicle operation parameter is determined in accordance with the determined history. At the same time, in accordance with the control condition decided and classified, an operating signal is applied to the engine with an operating parameter thus determined and the result of engine control response is observed to update the adaptive parameter.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: March 24, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Mikihiko Onari, Teruji Sekozawa, Motohisa Funabashi
  • Patent number: 5097422
    Abstract: A method and apparatus for determining integrated circuit layouts from a virtual circuit description and specification of a technology. Starting with high-level descriptions of a circuit, a virtual geometric description of the circuit is developed using a virtual grid described in terms of reference points relative to a substrate surface. The relationships among the reference points are expressed as fractions of variables that can also be used to define the design rules. When the technology is specified, the relationships among the reference points is determined, as in the layout of the integrated circuit.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: March 17, 1992
    Assignee: Cascade Design Automation Corporation
    Inventors: Ludlow V. Corbin, II, Steven G. Danielson, Richard E. Oettel, Mark E. Rossman, James E. Thiele
  • Patent number: 5095441
    Abstract: A logic method for accessing rules in a logic circuit synthesis system. Application of rules in a data base results in replacement of one or more model instances with other model instances or in alteration of values associated with the model instances or in the alteration of parameter values in the data base. Model instances are designated as VISIBLE or INVISIBLE, INVISIBLE model instances are ignored during logic circuit synthesis. VISIBLE model instances may be NEW or INACTIVE. All VISIBLE model instances are initially NEW. If no rule assciated with a model instance is TRUE, the model instance becomes INACTIVE. If at least one rule associated with a model instance is TRUE, one or more model instances are replaced and all inserted model instances and model instances directly connected to the inserted model instances become NEW. The number of model instances a rule will replace is called a SIZEWIN value of the rule.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: March 10, 1992
    Assignee: Digital Equipment Corporation
    Inventors: Donald F. Hopper, Edward G. Fortmiller, Snehamay Kundu, David F. Wall